+/* PsppireDataEditor is a GtkNotebook for editing a single PSPP dataset.
+
+ PsppireDataEditor has two tabs that normally contain a PsppireDataSheet and
+ a PsppireVarSheet. The user can choose to "split" the PsppireDataSheet view
+ into four views within the single tab. PsppireDataEditor also adds some
+ decorations above the PsppireDataSheet to note the current cell and allow
+ the current cell to be edited.
+
+ PsppireDataEditor's normal parent in the widget hierarchy is
+ PsppireDataWindow. */